63.

2 answers:

5 0

You have to combine Ashley and Lauren's servings to find the remainder for cole. To do that, you need a common denominator for the two fractions. 1/6 can be multiplied by 2 to get 2/12. Now you can add 7/12 and 2/12. You get 9/12. 12/12 - 9/12 is 3/12. When simplified the answer is 1/4!

<span>I hope you understand!!</span>

Georgia [21]3 years ago

5 0

I assume you mean 7/12 and 1/6.
Add 7/12 and 1/6 to find the total amount eaten by Ashley and Lauren:
7/12 + 1/6 = 7/12 + 2/12 = 9/12 = 3/4
Ashley and Lauren ate 3/4 of the tub.
Cole ate the rest.
1 - 3/4 = 4/4 - 3/4 = 1/4
Cole ate 1/4 of the tub.

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Whats the perimeter of this small parallelogram?

Arisa [49]

Answer:

Perimeter = 18 units

Step-by-step explanation:

one side = 4

other side² = 3² + 4² + 25

other side = √25 = 5

Perimeter = (2 x 4) + (2 x 5) = 18 units

4 0

3 years ago

A population of bees is decreasing. The population in a particular region this year is 1,250. After 1 year, it is estimated tha

8_murik_8 [283]

To model this situation, we are going to use the decay formula: $A=Pe^{rt}$
where
$A$ is the final pupolation
$P$ is the initial population
$e$ is the Euler's constant
$r$ is the decay rate
$t$ is the time in years

A. We know for our problem that the initial population is 1,250, so $P=1250$ ; we also know that after a year the population is 1000, so $A=1000$ and $t=1$ . Lets replace those values in our formula to find $r$ :
$A=Pe^{rt}$
$1000=1250e^{r}$
$e^{r}= \frac{1000}{1250}$
$e^{r}= \frac{4}{5}$
$ln(e^{r})=ln( \frac{4}{5} )$
$r=ln( \frac{4}{5} )$
$r=-02231$

Now that we have $r$ , we can write a function to model this scenario:
$A(t)=1250e^{-0.2231t}$ .

B. Here we are going to use a graphing utility to graph the function we derived in the previous point. Please check the attached image.

C.
- The function is decreasing
- The function doe snot have a x-intercept
- The function has a y-intercept at (0,1250)
- Since the function is decaying, it will have a maximum at t=0:
$A(0)=1250e^{(-0.2231)(0)$
$A_{0}=1250e^{0}$
$A_{0}=1250$
- Over the interval [0,10], the function will have a minimum at t=10:
$A(10)=1250e^{(-0.2231)(10)$
$A_{10}=134.28$

D. To find the rate of change of the function over the interval [0,10], we are going to use the formula: $m= \frac{A(0)-A(10)}{10-0}$
where
$m$ is the rate of change
$A(10)$ is the function evaluated at 10
$A(0)$ is the function evaluated at 0
We know from previous calculations that $A(10)=134.28$ and $A(0)=1250$ , so lets replace those values in our formula to find $m$ :
$m= \frac{134.28-1250}{10-0}$
$m= \frac{-1115.72}{10}$
$m=-111.572$
We can conclude that the rate of change of the function over the interval [0,10] is -111.572.